Finding the Fourth Proportional to 19,979,943.42, 27,572,310.82 and 11,278,191.18
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Solution
The fourth proportional to 19,979,943.42, 27,572,310.82 and 11,278,191.18 is: 15,563,897.56
Step by Step Solution
- Step 1: Write the proportion equation
19,979,943.42 : 27,572,310.82 = 11,278,191.18 : x - Step 2: Convert to fraction form
19,979,943.42/27,572,310.82 = 11,278,191.18/x - Step 3: Cross multiply
19,979,943.42x = 27,572,310.82 × 11,278,191.18 - Step 4: Simplify right side
19,979,943.42x = 310,965,792,702,342.56 - Step 5: Solve for x
x = 310,965,792,702,342.56/19,979,943.42 - Step 6: Final answer
x = 15,563,897.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.